Cloud Break Optics

0.77x 縮減器/平場器 用於 Esprit 120 (S20209)

0.77x 縮減器/平場器 用於 Esprit 120 (S20209) - Main image
$315 $525 In stock

Category: 天文攝影配件

  • 34mm 全照明視野,但也支援全片幅
  • 後焦距 95mm(安裝後焦距墊片和 M48 環時為 55mm)
  • 將原生 f/7(840mm)降至 f/5.4(647mm)
  • 與原生 f/7 相比,曝光時間減少 68%
  • 內建 2 吋濾鏡槽,用於安裝濾鏡
  • 搭配全片幅相機使用時,視野為 3.18 × 2.12 度
  • 搭配 APS-C 裁切感光元件使用時,視野為 2.08 × 1.39 度
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Customer Reviews (4.6 / 5 · 5 reviews)

Matthew ★★★★★

Finally got this reducer dialed in on my Esprit 120, and the drop from f/7 to f/5.4 cut my sub-exposure times noticeably. The 95mm back-focus with the included spacers was easy to set up for a full-frame sensor—zero vignetting even at the edges.

Ella C. ★★★★★

I was worried about the back-focus math, but the 95mm specification worked perfectly with my setup. The drop from f/7 to f/5.4 has already cut my exposure times noticeably.

Natalie R. ★★★★★

Cut my exposure times by over a third compared to native f/7, and the 34mm fully illuminated field covers my full-frame sensor without any corner artifacts. Setup was straightforward with the included spacers to get the correct 55mm back focus.